Antiskidding device.



W. H. PUTNAM.

ANTISKIDDING DEVICE.

APPLIOATION FILED MAR. 1, 1912.

L59 Patented Nov. 26, 1912.

IN VEN TOR WITNESSES A TTORNEY.

. effect. if desired at simiias eppsrstusmsy (it? whom Be it 11cc a citizen of and resitielit oi of New York i o invented certain new meets in Antisl ithiing Devices,

ct which Y J? 2i 1 v v, 1 toe toliowiiig is s mo clear and em,

scsiption.

This 321v ntice is: power vehicles, and for i psovision of rolieis which a plurality of chains, and which ZOiiGZS brackets the vein sod siutsbie s 1 L cecome irict ittliy en ages e. is 1 iece oi tlies oi the reel ls use of foot hand iever st the chscti'eurs sect, whereby the roiiers Wiii acquire rotary motions, and ssiti fiexioie members under centrifugal force will be siiccessi-veiy thrown undeithe Live tread for the anti-skidding be applied to the front Wheels of an eutemobiie, or power vehicle, controiiecl f? either the same ievei' which controls the via vice on the rear axle, or by a. he levers being of the usual type further object of the device as above set forth is the provision of means for instzintaneousiy engaging the said friction chain pulleys against t'. .s at s; spemis at v" the vehicle may h and. the option of the chem opeistor, this being accomplished by me of a suitable connection between the carrying roller and s lever at the chsufi'eurs seat.

tire chains -en automobile veer.

se, my device, by eneei. is particularly valuable in lessening Ell changer of accidents resulting from uniookeci for deviation from a sti'aight line. Furthermore, my device, when the machine is proceeding on a straight course, or line, may be raised from its engagement against the tires by action of the foot lever as describe, and sis long as the vehicle proceeds on it straight line, is neither wearing itself or the tire. Likewise the device be thrown into use when turning comers. starting or stopping -1 .ion is described in conic-motion 1 the accompanying iimwings and is set h in the clsims. -s the clmwingsz-Figure 1 is a. diagrammatic piss view showing an automobile and my isipi'oveci devices opemtiveiy applied thereon. Fig. 2 is :1. plan View showing por- Fig. 3 is an elevation of the rear Wheel of the vehicle and the improved devices in 0pei'stive reistion thereto. Fig. 4 is a sectional eievstion of the chain carrying roller and the supporting arts therefor. Fig. 5 is a horizontal sectional View on line 5-5, Fi

Fig. 6 is a detail view showing a construction to be hereinafter referred to.

in, the drawings, A represents a bracket supported by the housing for the rear Wheel axle and projected iOW1W&ICiiy and out- (ily toward the Wheel The extremity ii the brscltet A which is towsrc i the Wheel is made bifurcated or of s fork construction and receives pivotoii v therein'atb a journal stud or duplicated tmmnion formed as a part of a downwardly extending non-rota.- t-ive shaft (5 the lower extremity of which Y fOildE B is connected and capable of re- @1021, the lower end of the shaft (Z being suiteliiy formed. to constitute s .jomnsi therefoi; The said toilet B is preferably made with a concave periphery. as shown, more or less nearly conform to the cross sections contour of the automobile Wheel. i'oiier E is proviciecl with a plurality suitsbiy spaced flexible members i" 7, -'-?i% BXGHY fiHi es ci'ieins the some being connecteti the roller at points suitably ir note 110111 its periphery anti adapted i 1 i t to frictional contetive moon oi the roller a as carried in the suitably recessed or, aperwhen the vehicle is running at quite slow -8 inches beyond the lower edge portion of in Fig. 3,'to be by centrifugal force thrown to more or less nearly radial relation to the roller. The length of extension of the chain sections 7 will in practice be from 5 to 7 or the friction roller.

The friction wheel B and its supporting shaft (Z are so hung relatively to the portion of the vehicle wheel intread bearing on the ground that they normally by gravitation assume positions to engage the vehicle wheel as represented'in Fi n 3.

Mechanisms or connections are provided so that when the anti-skidding device is to be withdrawn from its cotiperative relation to the vehicle wheel the friction roller with its chain-like appurtenances and the roller carrying shaft may be bodily swung inw'ardly for a quarter of a revolution or less;v and in the present instance such means is shown to consist in a cord, chain or other suitable flexible connection g suitably sheave guided, a guiding sheave being understood tured bracket, at it, such connection thence running to connection with a hand or foot lever D located adjacent the drivers seat. This foot lever is understood as being of similar character to shift levers with which automobiles are equipped and in conjunction with which a detent or retaining dog is combined so that under normal running conditions the lever will be held at a position for placing the anti-skid device in its withdrawn or noneffective position in relation to the vehicle wheel.

The friction wheel B is made in the form of an inverted bell,- its solid upper portion deriving its journal bearing on the shaft 05 somewhat above the lower end of the latter, suitable collars or lash preventing means being provided; and the chain sections are secured by cotter pins 0 extending between pairs of cars 0 for each of the chains pro vided at the top wall or web of the roller,-v such sections thence extending downwardly through apertures a therefor and then trans versely and outwardly relatively to the lower edge of the. roller. .o

A deflector 6 carried bythe lower extremity or extension of the roller carrying shaft, below the lower portion of the pulley and extending beyond the circumference thereof servesv to assist in imparting the radial disposition of the chain sections which pass over them especially at times speed and .before any considerable degree of centrifugal force may be developed.

It is understood that the devices hereinabove described are to be duplicated or further pluralized as the desirability or ad- 5 vantage thereof dictates, and as represented l in Fig. 1, a pair of the centrifugally operating and gravitative appliances arereprwsented relatively to the two rear Wheels of an automobile, the connections 9 g for both being merged into-and continued in a single connection g extending to the foot or hand operating lever or other device for control of the appliances.

The shaft (Z which is hung in the supporting bracket is provided with an outwardly extending lug 7' adapted for engagement with an adjustable stop screw orabutment 7a which is screw engaged through a lug m of the bracket so that motion of the shaft carried roller too far outwardly will be prevented, and so that a'chain member f which is subject to the action of the wheel thereon will be ineffective to pull or drag the roller with a too great and tire injuring pressure against the latter. v

I claim 1. In an antiskidding device for vehicles, the combination with a vehicle wheel, of a roller mounted adjacent the ground-bearing portion of the wheel having frictional engagement with the wheel, and provided with a plurality of flexible members adapted under centrifugal force to be thrown more or less nearly radially the tread of the wheel.

2. In an anti-skid device for vehicles the combination with a vehicle wheel, of a roller mounted inside of and adjacent the tread. portion of the wheel, bodily movable to and away from frictional engagement with such portion of the wheel and provided with a and to engage under as to engage under the tread of the wheel,

and means for controlling the position of the friction roller whereby it may be in operative relation to the vehicle wheel, or withdrawn therefrom.

3. In an anti-skid device for vehicles, the combination with a vehicle wheel, of a roller mounted inside of and adjacent the tread portion of the wheel, bodily movable to have positions away from, and to be placed into frictional engagement with the portion of the wheel near its tread, and to be thereby ro tated, the said roller being provided with a plurality of flexible members adapted under centrifugal force to be thrown r'a-, dially so as to successively engage under the tread of the wheel.

4. In an anti-skid device for vehicles, the combination with a vehicle wheel anda stationary bracket mounted inside and adjacent the wheel, of a shaft the upper end of which is pivotally supported on said bracket, a friction roller mounted for rotation on a lower portion of the shaft, and adapted to hav a frictional engagement with the-wheel adapted under .centrifugal force to be thrown radially to engage under the wheel tread, and a connection extending from the shaft to a forward portion of the vehicle and controlling means appurtenant thereto.

5. In a device of the character described, the combination with a vehicle wheel, of a roller, mounted inside of and adjacent the tread portion of the wheel, having a concave periphery and adapted to have frictional engagement with the vehicle wheel tire and made hollow, and having the upper wall thereof provided with attachment lugs and apertures through such wall adjacent said lugs, and flexible members secured to the attachmentrlugs, extending through said apertures into the hollow roller and continued outwardly beyond the lower portion of the latter.

6. In a device of the character described, the combination with a vehicle wheel, of a roller, mounted inside of and adjacent the tread portion of the wheel, having econ-- cave periphery and adapted to have frictional engagement with the vehicle wheel tire and made hollow, and having the upper wall thereofprovided with attachment lugs and apertures throu h such wall adjacent said lugs, and flexible members secured to the attachment lugs, extending through said apertures into the hollow roller and continued outwardly beyond the lower portion of the latter, and the said roller being internally provided with, members arranged in separation and serving to prevent the tangling or intertwining of the flexible members one with another.

Signed by me at Springfield, Mass, in presence of two subscribing witnesses.

WILLIAM H. PUTNAM. Witnesses;

G. R. DRISCOLL, WM. S. Bnnnows.

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

